This tweet from Tom Warren made me smile. So, it's 2012 and tablets are finally able to do what the Amiga did in 1985. Seems like a bit of a stretch to be excited about that, right? Sure, until I caught myself getting excited - only a bit, but still - by this piece of news. Update: removed me being an annoyed child.

I think that adding multi-user support to a mobile OS is not a priority at all.

Android developers should focus on performance. iOS is way ahead in this particular matter, It feels faster even using slower hardware.

You mentioned having tried Transformer Pad but I got the image that it's been a while ago. If true then that Pad was most likely still running Honeycomb; ICS 4.0 saw quite a large boost to graphics performance and fluidity, and the new Jelly Bean 4.1 improved that even more. Have you, or have you not tried an Android-tablet with similar specs as that iPad running Android 4.0.1 or newer? If not then that is most likely the reason for your experience.

Also, Android developers are improving Android's performance. You're just assuming that the developers can only work on one thing at a time which, quite obviously, isn't true. In fact it's often detrimental to development efforts to have a really large team all trying to work on the same thing, that's exactly why e.g. F/OSS developers tend to dedicate certain parts of the software to certain developers instead of all concentrating on only one thing at a time. Ie. you're complaining about something that is already being worked on and you're complaining about it as if one cannot work on other things, too, at the same time.